3D Papercrafting - new art form of folding

First Yamaha's papercrafts and now Canon's papercraft site offers some amazing (albeit time consuming) folding goodness in forms of animals, science, buildings, toys, origami, etc. You download a pdf, cut, glue, fold and put it together. If you have a few hours to kill give this a try. Thus, the folding war begins. I wonder if there a world folding championship out there. Any comments?

[Canon Papercraft]